The cracking sound was small but those stronger cultivators nearby could all hear it. Those truth realisation state cultivators were shocked, this was the sound of domain shattering.
Only domains that were near great completion would have this cracking sound. Everyone saw the power of the red robed woman's domain. It was dominating, but they didn't see Ye Mo do anything at all and that red robed woman's domain shattered.
The only explanation was that Ye Mo used his own domain to shatter it. Using one's own domain to shatter another's domain - how great was the mastery in domain? Great completion or even better? The red robed woman's domain couldn't resist Ye Mo's domain at all.
Ye Mo's power was too astonishing - but then they remembered that Ye Mo was the absurd cultivator who passed the Heaven 36 Domains and realized it didn't seem all that absurd.